Elastic-fluid turbine.



3.. & GREEN. ELAQTIG FLUID TURBINE.

E'WED OCT. 12, 1907.

Patented Mar. 29, 1910.

A'BFL'LOATIG'E E'XLED MAE. 8, 1906. BEN

anion.

JONATHAN S. GREEN, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE "'WES'IING- HQUSE MACHINE COMPANY, K CORPORATION OF PENNSYLVANIA.

- ELASTIC-FLUID. TURBINE.

To all whom it may concern:

Be it known that I, J ONATHAN S. GREEN, a citizen of the- United States, and a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Elastic-Fluid Turbines, .of which the following is a specification.

'This-inventidii 'relates to elastic fluid turbines.

In turbines, the blades and vanes are arranged 'in alter'na-te annular .rows, it is desirable to utilize means for securing the bl dos and vanes to their'respectiveholding ele ents which will enable the same to be assembled in segment like grou s prior to their assemblage in the holding e enients.

The object of this invention has been to provide a simple and relatively cheap method andmeans for forming the blades and vanes into segment like groups rea'dy for' assembling in their respective holding eleother than steel, will meuts.

. In the'drawings accompanying this ap-- plication I have attempted to illustrate various methods and means for carrying out this invention and-in the same, Figures 1, 2 and-3 are views in perspective of blades or vanes or. fragments thereof, formed up to be utilized in carrying out this invention. Fig. 4 is a view in perspective of a form of base element or'strip adapted to be utilized with the form of blade or vane illustrated in Fig. 2. Fig. 5 is a view perspective of four blades or vanes, of the form shown in Figs. 1 and 2, secured to a base portion in conformity with this invention, and, in this view the outer ends of theblades or vanes, as the case maybe, are tied together. Fig. 6 is a side view in elevation of three blades or vanes, as the case may be, forming a portion of a segment like group, embodying this invention and Fi 7 1s aplan view of the blades or vanes i us'trated in Fig. 6.

The blades or vanes, which may be of any contour in cross section, if formed of metal preferably be stamped or forged with a tenon 8, either formed round, as shown in Fig.1, or rectangular, as shown in Fig. 2, or of some other suitable form, and with a fillet9 extending a distance up" the concave face. If the blade or vane is formed-of steel and drawn to shape, the

' Specification of Letters Patent.

and especially those in which Patented Mar. 29, 1910. Renewed October 12, 190?: Serial No. 397,171.

base portion of the same may be' cut away, as shown in Fig. 3, to form a tenon.

As the blades or vanes comprised in an annular row in either the stator or rotor of turbines are preferably arranged in seg mental groups, base elements or strips-.10, as illustrated in 'Fig. 4, having one beveled edge 11, adapted to lie against the avalls of an undercut slot ment as shown in Fig. 5, are formed in lengths suitable to accommodate the number of blades or vanes which it is desired to into'a group. These elements or strips have holes 12 punched throu h from top to bottom for the reception 0% the blades or vane tenons, and these holes'at the-under side of thestr-ip are preferably countersunk inorder that the head ofthe tenon when riveted or upset may have s ace to flow into.

Jn forming the b tenons are inserted into the holes in the base put ade or vane groups, the

elements, and afterthey have been secured thereto by; upsetting or riveting, a tie wire or bmdin element, such a-s'13, is passed through a ined holes in the blades or vanes which were-previously formed 'for that pur'so pose, and the group is then placed in its I channel or slot in the holding element and a calking strip 14 of suitable metal is placed in the element. By means of suitable calking tools, this strip 14 will be spread transversely of the slot and thereby cause the base strip and the blades or vanes to be securely locked to the holding elements. A fter' 'thls has been accomplished the outer or free ends of the blades or vanes may be secured'in any suit able manner to the binderor tiewire 13.

What I claim as new and useful is:

1. In a turbine, a blade or vane holding element provided with a; slot,,a blade'or vane base strip located within and extending lqngitudinally of said slot blades or vanes hav-v hich extend through said strips and which are secured-within mg reduced shanks w holes provided therein, means for securing said strip within said tying the outer ends of said together.

2. ,In a turbine, a blade or vane holding element provided with a slot, a blade orvane base stri located within and extending longitudina ly of said slot, a row of holes extending through the middle portion of said slot along side of the base strip 'or' slot and means for.

blades or vanes base strip located Within said slot, a row of 4. In combination in a turbine, a, blade or strip and are secured within said holes and tion of said strip, and blades or. vanes having a blade or vane circular holes extending through said strip and blades or vanes having integrally formed cylindrical shanks which extend through said means for securing said strip Within said slot and for tying the outer ends of said blades or vanes together.

vanecarrying element provided with a slot, a blade or vane base strip located'within and extending longitudinally of said slot, blades or vaneshaving reduced shanks which extend through said strip and are secured Within holes provided therein, and means for securing said strip Within said slot. 5. In combination in a turbine, a blade or vanecarrying element provided with a slot, a blade or vanebase strip located within and extending longitudinally of said slot, a row of holes extending through the middle porreduced portions which extend through said strip and are secured within .said ho es. 6. In combination in a turbine, a blade or vane carrying element provided with a slot, base strip located Within said slot and provided with arow of circular l and blades on vanes having reduced I of said-blades 'or v shank longitudinally holes, and blades or vanes having integrally formed cylindrical shanks which extend through saidstrip and are secured within said holes.

'7.- A turbine blade or vane provided at one end with a reduced mounting shank and areinforcing fillet extending from said of saidbl-ade.

8. Aitui'bine blade or vane provided at one end With a cylindrical mounting shank and a reinforcing fillet extending from said shank longitudinally of the blade.

9. In combination in a turbine,'a blade or vane holding element, a slot provided in said element, a perforated base strip adapted to be secured into said slot, vided with mounting shanks adapted to be secured into the perforations of said strip by being riveted or expanded, and means for securing said strip to the blade or vane car-' rying element,v

10. In combination in a turbine, a blade or vane carrying element provided with a slot, a blade or vane base strip located within and extending longitudinally of said slot, alined holes provided in said strip, and blades or vanes having reduced shanks which exteudthrough said holes and are secured to said strip by being riveted or upset.

In testimony whereof, I have hereunto subscribed my name this th day of March,

JNO. S. GREEN. \Vitnesses: j

GHARLns JV. M GGHEE, E. W. MoCALLisTnR.

blades or vanes pro- 

